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Enhancing Depth Maps with MLH Algorithm: A Study on DERS Improvement

This study explores the application of the Mid-Level Hypothesis (MLH) algorithm to enhance depth maps created by DERS, focusing on sub-pixel precision with low computational complexity. The research builds on previous experiments and introduces a post-processing tool compatible with DERS, showcasing notable improvements in precision and smoothness, as well as enhanced PSNR gains compared to existing methods. The findings indicate the potential of MLH for efficient depth map refinement, urging further testing across diverse sequences for comprehensive evaluation.

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Enhancing Depth Maps with MLH Algorithm: A Study on DERS Improvement

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  1. M16028 - Application of MLH for improvement of depth maps produced by DERS Olgierd StankiewiczKrzysztof Wegnerteam supervisor: Marek Domański Chair of Multimedia Telecommunications and MicroelectronicsPoznań University of Technology, Poland February 1st, 2009, Lausanne

  2. Introduction • Results of experiments in M16027 • Already existing tool, presented to MPEG in M15338 • Used for improvement of DERS (Nagoya) instead of PUT m16028

  3. What is MLH? • Mid-Level Hypothesis algorithm • Post-processing tool that introduces sub-pixel precision to already estimated depth maps, • Low computational complexity m16028

  4. Experiments • Similar to EEs, according to guidlines in W9991, • MLH upgraded to be DERS compatible • Configuration files • Depth maps • Limited set of sequences m16028

  5. Alt Moabit m16028

  6. Lovebird 1 m16028

  7. Book arrival m16028

  8. Newspaper m16028

  9. DERS – QPel precision m16028

  10. DERS – Pixel precision m16028

  11. DERS + MLH –> QPel precision m16028

  12. Conclusions - improvement • Compared to DERS Pel precision • 0.5 dB to 2 dB of PSNR gain • Compared to DERS HPel precision • up to 1 dB of PSNR gain • Subjectively more ‘smooth’ m16028

  13. Conclusions • Can be used with little effort • Low computational cost • Further test over variety of sequences are encouraged m16028

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